Figure 1.
Brief of method steps. *, exclusion criteria: pregnancy, current malignancy diseases, history of auto-immune diseases, possible infectious conditions (such as common cold) or fever, and age < 30 years-old.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.